GB396091A - Improvements relating to illuminated signs - Google Patents
Improvements relating to illuminated signsInfo
- Publication number
- GB396091A GB396091A GB203532A GB203532A GB396091A GB 396091 A GB396091 A GB 396091A GB 203532 A GB203532 A GB 203532A GB 203532 A GB203532 A GB 203532A GB 396091 A GB396091 A GB 396091A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sheet
- letters
- attached
- transparent
- illuminated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
- G02B6/006—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to produce indicia, symbols, texts or the like
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
396,091. Signs. MURRAY, L. E. R., 180, Uphill Grove, Millhill, London. Jan. 22 1932, No. 2035. [Class 3 (ii).] In a sign of the type wherein a sheet of glass or other transparent material is illuminated by light entering the sheet edgewise and is formed on one side with a pitted surface which is silvered or otherwise rendered reflecting, the letters, designs, &c. are attached to the unsilvered surface of the sheet or to a transparent or translucent sheet arranged in front of the said sheet so as to be readily detachable therefrom. As shown in Fig. 2, the letters 4 of sheet celluloid are secured to a glass sheet 1 which has a pitted rear face and is illuminated by a tubular incandescent lamp 3. As shown in Fig. 3, the letters 6 are secured to a transparent or translucent sheet 7 in front of a silvered sheet 8. Guide lines, as described in Specification 375,224, may be provided on the front of sheets 1, 8 or on the front or rear of the sheet 7. The letters are attached to the sheets 1, 7 by cement or adhesive which is permanently " tacky." The letters may be of rubber and dished so as to be attached by suction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB203532A GB396091A (en) | 1932-01-22 | 1932-01-22 | Improvements relating to illuminated signs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB203532A GB396091A (en) | 1932-01-22 | 1932-01-22 | Improvements relating to illuminated signs |
Publications (1)
Publication Number | Publication Date |
---|---|
GB396091A true GB396091A (en) | 1933-07-24 |
Family
ID=9732451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB203532A Expired GB396091A (en) | 1932-01-22 | 1932-01-22 | Improvements relating to illuminated signs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB396091A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2686428A (en) * | 1950-06-01 | 1954-08-17 | Nathan Mfg Corp | Liquid level gauge |
US5408387A (en) * | 1991-11-30 | 1995-04-18 | Meitaku System Co., Ltd. | Edge light panel and its production |
-
1932
- 1932-01-22 GB GB203532A patent/GB396091A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2686428A (en) * | 1950-06-01 | 1954-08-17 | Nathan Mfg Corp | Liquid level gauge |
US5408387A (en) * | 1991-11-30 | 1995-04-18 | Meitaku System Co., Ltd. | Edge light panel and its production |
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